Any Idea What This Is ?

[tidyshow]

we had 2 fish die in one of our tanks a few days ago.
we were just about to remove them all into our new setup.
so we moved the rest into another tank and shut off the pump.
the following day this appeared over the entire inside glass of the tank.

i'm sure someone on here will know what they are.

 

[paw-paw]

Planaria?

 

[tidyshow]

i think you may be right. good job we are finished with that tank now i suppose.

 

[SJ2K]

They only appear when ammonia levels are high, that will of killed your fish. Remove the ammonia, remove the planaria.

 

[tidyshow]

tbh i think the fish died off because of stress due to an aggressive gourami.
as i mentioned before, these appeared AFTER i removed the fish from the tank and also
turned off the pump and aerators